On Mon, Oct 16, 2023 at 09:55:37AM +0200, Borislav Petkov wrote: > From: "Borislav Petkov (AMD)" <bp@xxxxxxxxx> > Date: Sat, 7 Oct 2023 12:57:02 +0200 > Subject: [PATCH] x86/cpu: Fix AMD erratum #1485 on Zen4-based CPUs > MIME-Version: 1.0 > Content-Type: text/plain; charset=UTF-8 > Content-Transfer-Encoding: 8bit > > Upstream commit f454b18e07f518bcd0c05af17a2239138bff52de. > > Fix erratum #1485 on Zen4 parts where running with STIBP disabled can > cause an #UD exception. The performance impact of the fix is negligible. > > Reported-by: René Rebe <rene@xxxxxxxxxxxx> > Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx> > Tested-by: René Rebe <rene@xxxxxxxxxxxx> > Cc: <stable@xxxxxxxxxx> > Link: https://lore.kernel.org/r/D99589F4-BC5D-430B-87B2-72C20370CF57@xxxxxxxxxxxxx > --- > arch/x86/include/asm/msr-index.h | 4 ++++ > arch/x86/kernel/cpu/amd.c | 9 +++++++++ > 2 files changed, 13 insertions(+) Now queued up, thanks. greg k-h
